A force of 250 N is just sufficient to start a 50 kg steel trunk moving across a wooden floor. Find the coefficient of static friction.
aforce of 200N is just sufficient to start a 50-kg steel trunk moving across awooden floor. find the coefficient of static friction
Sir, static and kinetic are different isn't it?
Yes they are different.
250 N = M*g*Us = 490N * Us
Solve for Us, the static friction coefficient.
Us tells you how big the applied force must be to make it move.
Sir, gonna have some favor. What will be the formula to use?
I already wrote and substituted numbers in the formula above.
(Force required to move) = (Weight)*Us
Us = (Force required to move)/(Weight)
= 250/490
This formula applies on level horizontal ground only